Auto-update when Mac timezone changes

Apologies if this has been addressed before - I didn't see anything about it in the FAQ.

When I switch timezones, my Mac automatically updates, but f.lux never takes the hint to update on its own -- I have to manually go into the settings and click the arrow/location button to force it to change. Checked out all the settings and couldn't find any place to get the location to automatically update.

It's not a huge deal, but would be a great feature -- thanks! And keep up the awesome work - your app is a lifesaver!